The purpose of this design guide is to provide a digital microwave system planning guide for use by digital microwave systems engineers at Department of Defense ranges. The objectives of this design are: (a) To furnish a guide for digital microwave system designs to be used by microwave engineers to implement a standardized approach to digital microwave systems for U.S. national ranges, and (b) To provide and maintain cognizance of applicable technical publications available by submitting on a timely basis those technical directives, standards, and references that impact on digital system design and may be included as an update to this planning document. Most of the telecommunications plants throughout the world have been built for analog transmission. In that mode, analog signals remain in analog form throughout the transmission process, while digital signals must be converted into a quasi-analog type signal. Digital transmission is the transfer of information by digital signals.

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